Ketzal’s Corridors is based off of a simple theme: Players take control of a block. This block, depending on which level you are playing, will come in a different shape that can be shifted to the left, right, forward or back. As you control the block, you are put into an area where you are constantly moving forward, and have to shift the block to fit through holes in the walls that lie ahead. These spaces in the walls all contain hearts, which you are encouraged to collect to raise your score and unlock levels.